A Gel Injected Into the Scrotum Could Be the Next Male Contraceptive
Biotech company Contraline has safely implanted a sperm-blocking hydrogel in 23 men. It’s designed to be a fully reversible vasectomy......»»
One more way to die: Tremors when Vesuvius erupted collapsed shelter walls
Two male skeletons showed signs of severe fracture and trauma injuries. Enlarge / Two skeletons found in the ruins of a Pompeii building may have been crushed by wall collapses triggered by earthquakes. (credit: Pompeii Archaeolo.....»»
Researchers listen to the hearts of bats in flight
Researchers from Konstanz have measured the heart rate of bats over several days in the wild, including complete flights—the first time this has been done for a bat species. To record the heart rate of male common noctule bats during flight, the sc.....»»
A pregnant stingray with no male companion now has a "reproductive disease," aquarium says
A North Carolina aquarium that said it had a pregnant stingray with no male companion now says the fish has a rare reproductive disease......»»
Study reveals maintenance of male-related genes after loss of males in stick insects
Traits are often lost during evolution, either because they are no longer beneficial or because they are too costly to maintain. When this happens, it is generally believed that the genes underlying the trait will eventually degrade as well, making i.....»»
Animals self-medicate with plants—a behavior people have observed and emulated for millennia
When a wild orangutan in Sumatra recently suffered a facial wound, apparently after fighting with another male, he did something that caught the attention of the scientists observing him......»»
New findings on fertility: Sperm can adapt to sexually transmitted microbes
Researchers from Dresden University of Technology (TUD) and the University of Sheffield have discovered that male fertility can adapt to microbes. These findings shed new light on the importance of sperm ecology and might have significant implication.....»»
Bigger is better: Male proboscis monkeys" enhanced noses evolved to attract mates, says study
When it comes to the animal kingdom, bigger is better, at least for proboscis monkeys, famously known for their long, large and droopy noses......»»
AI model accurately predicts male fruit flies" courtship behavior in response to sight of a female
We've been told, "The eyes are the window to the soul." Well, windows work two ways. Our eyes are also our windows to the world. What we see and how we see it help determine how we move through the world. In other words, our vision helps guide our ac.....»»
New research suggests diverse headgear in hoofed mammals evolved from common ancestor
From the small ossicones on a giraffe to the gigantic antlers of a male moose—which can grow as wide as a car—the headgear of ruminant hooved mammals is extremely diverse, and new research suggests that despite the physical differences, fundament.....»»
A penguin with an unconventional call inspires researchers to change how they study penguins
An emperor penguin's sex determines the nature of their courtship call—male vocalizations are composed of long, slow bursts with lower frequency tones than the female version. But calls of SeaWorld San Diego male penguin E-79 caught the attention o.....»»
New candidate genes for human male infertility found by analyzing gorillas" unusual reproductive system
Despite their formidable bodies, male gorillas are lacking in one particular area of their anatomy......»»
Expelling students for bad behavior seems like the obvious solution, but is it really a good idea?
Two male students have been expelled from a Melbourne private school for their involvement in a list ranking female students......»»
Male or female? Scientists discover the genetic mechanism that determines sex development in butterflies
Scientists of the Biology Centre, Czech Academy of Sciences, in collaboration with University of Liverpool have found the genetic mechanism that determines whether individuals of the butterfly species Bicyclus anynana become male or female......»»
Why do male chicks play more than females? Study finds answers in distant ancestor
Play is widespread, but far from ubiquitous, across the animal kingdom. Especially common in mammals, play is also known to occur in taxa as diverse as birds, fish, octopuses, and even insects. But what is its function, given that natural selection n.....»»
Alpacas found to be the only mammal to directly inseminate the uterus
A pair of biologists from Mount Holyoke College, working with a colleague from North American Camelid Studies Program, the Nunoa Project, has found that the male alpaca thrusts his penis all the way into the uterus of the female during mating, making.....»»
Startup financing gender gaps greater in societies where women are more empowered: Study
Commercial bankers provide capital to fund the operations and growth of businesses. However, as these lenders evaluate entrepreneurs who apply for loans, gender bias leads to women being denied more often than their male counterparts......»»
Wild turkey numbers are falling in some parts of the US—the main reason may be habitat loss
Birdsong is a welcome sign of spring, but robins and cardinals aren't the only birds showing off for breeding season. In many parts of North America, you're likely to encounter male wild turkeys, puffed up like beach balls and with their tails fanned.....»»
Exploring why young women in Australia are reluctant to enter politics
Despite growing momentum to increase female representation in Australia's national parliament, it continues to be a male dominated domain. New research from Monash University explores why young women still feel reluctant to become a member of the nat.....»»
Researchers find babbling by zebra finch chicks is important step to memorizing songs
When babies learn to talk or birds learn to sing, the same principle applies: listen and then imitate. This is how the first babble becomes the first word or vocalization. Male zebra finch chicks initially memorize the song of an adult bird. Later, t.....»»
Older male blue tits out-compete young males when it comes to extra-marital breeding
Young male blue tits are less successful in fathering offspring outside their breeding pair, not because of a lack of experience, but because they are outcompeted by older males, Bart Kempenaers and colleagues from the Max Planck Institute for Biolog.....»»